Let the customer know were you are, with a helium balloon! They can see your business from up to 3 miles away! Our Helium Spheres are the ultimate in small and large Business Advertising. All giant round advertising balloons are made of durable PVC and manufactured with a UV inhibitor in the material throughout the entire balloon to protect them from fading from the sun exposure. This specially manufactured closed cell material is designed to hold helium perfectly and is 18 mil thick, ideal for outdoor used and much stronger than the lighter urethane material from other brands.